Hi Peggy,
Many thanks for your answer. You wrote that "The drivers that come with the card are almost guaranteed to be outdated "... In this case it will probably be a problem, because I cannot find any driver for GTX 670MX on Nvidia website (there is one which fits to GTX 670M, but I suppose that 670MX is an absolutely different model. Am I wrong?)
Here are the graphic cards for which the new driver is available:
GeForce 600M series:
GeForce GTX 680M, GeForce GTX 675M, GeForce GTX 670M, GeForce GTX 660M, GeForce GT 650M, GeForce GT 640M LE, GeForce GT 640M, GeForce GT 635M, GeForce GT 630M, GeForce GT 620M, GeForce 610M